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Articles by Luiz Gustavo Rombola
Total Records ( 2 ) for Luiz Gustavo Rombola
  Alexssandro Zaffari Almeida , Ianglio Marcio Travassos Duarte Jacome , Rafael Aldrighi Tavares , Rodrigo Garrofallo Garcia , Irenilza de Alencar Naas , Fabiana Ribeiro Caldara , Sarah Sgavioli , Bruna Barreto and Luiz Gustavo Rombola
  Light duration, intensity and wavelength are critical environmental stimuli affecting physiology and growth rate of birds. The objective of this trial was to evaluate the effect of emitting diode lux color (LED) as a source of artificial lighting for quail. The study used 120 quails (Coturnix coturnix) distributed in a completely randomized design in 20 cages, with five treatments (LED red, white, Blue, green and yellow), with four repetitions of six birds each, totaling 20 experimental units. Production indices were evaluated weekly: feed intake (g/bird/day), average daily gain (g/bird/day), feed conversion (g/g) and carcass yield (%). For the biometrics analysis of the reproductive system, the length of the oviduct and the total number of ovarian follicles was measured. Using the computer software ASSISTANT, the data were submitted to analysis of variance and the differences compared with Tukey test 5% in case of a significant effect. The results of feed intake, daily weight gain, feed conversion and carcass yield did not differ (p>0.05) between treatments. No differences were found between the average size of the oviduct and between the total number of follicles (p>0.05). Different colors do not influence the early development of the reproductive system of the quails (Coturnix coturnix), showing that it is possible to use the LED lighting system, for quail production.
  Dayane Lilian Pires Iglesias , Sarah Sgavioli , Euclides Braga Malheiros , Rodrigo Garofallo Garcia , Luiz Gustavo Rombola , Fabiana Ribeiro Caldara , Irenilza de Alencar Naas and Isabel Cristina Boleli
  The duration of pre-housing fasting may determine the chick’s weight loss, impairing their performance during the rearing. Management’s practices to minimize the effect of this fast are extremely important to the success of broilers rearing. The aim of this study was to check if the ascorbic acid injection (AA) in egg avoids or minimizes the effects of pre-housing fasting in broilers chicks. Fertile Cobb® broiler eggs from hens at 29 weeks of age were used. The experimental design was completely randomized in a factorial arrangement 2 × 4 × 2, and two sex (males and females), with 4 treatments (non-injected eggs and chicks submitted to fasting; not injected eggs and chicks fed with water and feed ad libitum; eggs injected with 1 μg de AA/150 μL of water and chicks submitted to fasting; eggs injected with 3 μg de AA/150 μL of water and chicks submitted to fasting) with 2 different ages (48 and 72 h after hatching). Eggs injected with 1 mg of AA preincubation has increased the hatching by 14.2% avoiding the negative effect of fasting on the weights of the chicks till 48 h after hatching, however, feed intake after this period of fasting is critical, independent of the AA injection, the association of AA injection and feed intake, are important managements to avoid weight loss of pre-housing chicks.
 
 
 
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